Question

помогите пажалуста 2 примера ​

Answer 1

3.

$- 3 {x}^{2} + 18x - 27 = 0 \\ {x}^{2} - 6x + 9 = 0 \\ d = {( - 6)}^{2} - 4 \times 9 = 36 - 36 = 0 \\ x = \frac{6}{2} = 3$

5.

$6 {x}^{2} + 12x + 6 = 0 \\ {x}^{2} + 2x + 1 = 0 \\ d = {2}^{2} - 4 \times 1 = 4 - 4 = 0 \\ x = \frac{ - 2}{2} = - 1$